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Analog Devices Inc. LT1996CDD#PBF
- Part No.:
- LT1996CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT1996CDD#PBF.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:231
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Product details
Overview
LT1996CDD#PBF from Analog Devices (formerly Linear Technology) is a precision, gain-selectable difference amplifier IC integrating eight matched SiChrome resistors and a low-offset op amp in a single 10-lead DFN package. It delivers gain accuracy <0.05%, CMRR >80 dB at G=9, rail-to-rail output swing within 40 mV of rails, and operates from 2.7 V single or ±18 V split supply - ideal for high-accuracy differential sensing in medical instrumentation and strain gauge interfaces.
For engineers reviewing the LT1996CDD#PBF datasheet, LT1996CDD#PBF pinout, LT1996CDD#PBF application, or LT1996CDD#PBF equivalent, key selection considerations include verified resistor matching (±0.03% typ at G=9), guaranteed 85°C operation, input voltage range up to ±60 V on P9/M9 pins, and confirmed compatibility with difference, inverting, and noninverting configurations without external components.
Technical Context
The LT1996CDD#PBF implements a fully integrated difference amplifier architecture where internal 450 kΩ-based resistor networks (450k/9, 450k/27, 450k/81, and 450k) are connected to dedicated input pins (P9/P27/P81/REF and M9/M27/M81), enabling precise gain setting via pin strapping. Its internal op amp features 50 µV max input offset voltage and 560 kHz gain-bandwidth product, optimized for stability across noise gains ≥2 into ≤500 pF capacitive loads.
Resistor matching is guaranteed by gain error testing (±0.03% max at G=9 for LT1996CDD), with temperature coefficient <3 ppm/°C and nonlinearity <10 ppm - enabling CMRR >90 dB at G=27 and >100 dB at G=81 under ±15 V supply conditions. The device supports true rail-to-rail output while maintaining input common-mode range extension beyond supplies on P9/M9 pins (±60 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Accuracy | ±0.03% max at G=9 - ensures <0.3 mV error in 10 V full-scale differential measurement |
| CMRR | 90 dB min at G=27, ±15 V - rejects >31,600× common-mode interference in industrial sensor front-ends |
| Supply Range | 2.7 V single or ±18 V split - supports battery-powered handhelds and industrial ±15 V systems |
| Output Swing | Within 40 mV of either rail at no load - enables full dynamic range utilization with 5 V or ±15 V supplies |
| Input Offset Voltage | 150 µV max - limits DC error to <1.35 mV at G=9, critical for precision bridge amplification |
| Quiescent Current | 100 µA at 5 V - enables micropower operation in portable medical devices and IoT sensors |
| Bandwidth | 38 kHz at G=9 - sufficient for DC–10 kHz sensor signal conditioning with <0.01% settling |
Pinout & Package
LT1996CDD#PBF uses a 10-lead (3 mm × 3 mm) plastic DFN package with underside metal pad connected to VEE (optional PCB connection). Pin functions are validated per Linear Technology's official datasheet (1996f Rev. D, pp. 7–8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P9 (Pin 1) | Noninverting gain-of-9 input | Connects internal 50 kΩ resistor to op amp +IN; supports ±60 V overvoltage tolerance when P81/M81 grounded |
| P27 (Pin 2) | Noninverting gain-of-27 input | Connects internal (50k/3) Ω resistor to op amp +IN; used with REF to set attenuation/gain combinations |
| P81 (Pin 3) | Noninverting gain-of-81 input | Connects internal (50k/9) Ω resistor to op amp +IN; enables high-gain differential sensing up to 117× |
| VEE (Pin 4) | Negative power supply | Ground in single-supply mode; negative rail in split-supply; underside metal pad tied to this node |
| REF (Pin 5) | Reference input | Sets output zero-differential level; connects internal 450 kΩ resistor to op amp +IN |
| OUT (Pin 6) | Amplifier output | Rail-to-rail output capable of sourcing/sinking ≥8 mA; settles to 0.01% in 85 µs at G=9 |
| VCC (Pin 7) | Positive power supply | Accepts 2.7 V to 36 V above VEE; supplies internal op amp and resistor network |
| M81 (Pin 8) | Inverting gain-of-81 input | Connects internal (50k/9) Ω resistor to op amp −IN; pairs with P81 for 81× differential gain |
| M27 (Pin 9) | Inverting gain-of-27 input | Connects internal (50k/3) Ω resistor to op amp −IN; used in configurable difference/inverting topologies |
| M9 (Pin 10) | Inverting gain-of-9 input | Connects internal 50 kΩ resistor to op amp −IN; supports ±60 V common-mode range in difference mode |
Key Features
| Feature | Design Value |
|---|---|
| Pin-configurable topology | Supports difference, inverting, and noninverting modes via pin strapping - eliminates external resistors and layout uncertainty |
| Matched resistor network | 0.03% max gain error at G=9 with <3 ppm/°C drift - guarantees stable CMRR >90 dB across –40°C to 85°C |
| Rail-to-rail output | Swings within 40 mV of VCC or VEE at no load - maximizes ADC dynamic range in 5 V or ±15 V systems |
| High-voltage input capability | P9/M9 pins withstand ±60 V independent of supply - enables direct interfacing to industrial ±10 V sensors |
| Micropower operation | 100 µA supply current at 5 V - extends battery life in portable diagnostic equipment and wearable monitors |
Applications
| Medical Instrumentation | Strain Gauge Amplifiers |
|---|---|
Use Scenario: Amplifying low-level bio-potential signals (ECG, EEG) from dry electrodes with high common-mode interference. IC Role / Device Role / Timing Role: Difference amplifier configured at G=9 with REF biased at mid-supply to reject 50/60 Hz mains noise. Use Value: 90 dB CMRR ensures >31,600× suppression of common-mode line noise, enabling clean sub-mV signal recovery without shielding. | Use Scenario: Conditioning Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision difference amplifier with G=81, driven by ±10 V excitation and referenced to bridge mid-point. Use Value: ±0.03% gain error and <10 ppm nonlinearity preserve 16-bit measurement integrity across temperature and supply variation. |
| Differential to Single-Ended Conversion | Handheld Instrumentation |
Use Scenario: Converting LVDS or RS-422 differential data lines to single-ended logic for microcontroller ADC sampling. IC Role / Device Role / Timing Role: High-speed difference amplifier with G=1, using P9/M9 inputs and REF = VCC/2 for level shifting. Use Value: 38 kHz bandwidth and 85 µs 0.01% settling support accurate digitization of slow-slewing sensor data at ≤10 kSPS. | Use Scenario: Battery-powered multimeter front-end measuring ±200 mV to ±20 V ranges with auto-ranging. IC Role / Device Role / Timing Role: Configurable noninverting amplifier (G=10, G=100) using P/M pin strapping and internal resistors. Use Value: 100 µA quiescent current and 2.7 V minimum supply enable >500-hour operation on two AA cells while maintaining 0.05% gain accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1991IMS#PBF | Fixed gain range (–13 to 14); lower max gain (14× vs 118×); 0.1% resistor matching; 12-lead MSOP only | Limited to low-gain, high-bandwidth (<1 MHz) applications; unsuitable for high-CMRR (>80 dB) or high-voltage (±60 V) use | Select LT1996CDD#PBF when gain flexibility, CMRR >90 dB, or overvoltage-tolerant inputs are required |
| INA149IDR | Fixed unity-gain difference amplifier; 120 dB CMRR; ±200 V input rating; 1.5 mA supply current; SO-8 package | Optimized for ultra-high common-mode rejection in motor drive current sensing; not pin-configurable for gain selection | Choose LT1996CDD#PBF for programmable gain and micropower operation; choose INA149IDR for extreme CM voltage and highest CMRR |
Compared with LT1991IMS#PBF and INA149IDR, the LT1996CDD#PBF uniquely combines pin-strappable gain (9–118×), ±60 V input tolerance on dedicated pins, and 100 µA supply current - making it optimal for portable, multi-range, high-accuracy sensor interfaces where board space and power are constrained.
Availability
LT1996CDD#PBF is available at Aetrix Electronics and suitable for medical instrumentation, strain gauge amplifiers, and handheld test equipment requiring stable component supply, guaranteed –40°C to 85°C operation, and long-term production continuity.
Supply support for LT1996CDD#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1996CDD#PBF belongs to ADI's precision signal conditioning portfolio, designed specifically for applications demanding high-accuracy, low-power, and flexible gain configuration in compact form factors - such as portable diagnostics, industrial process control, and precision data acquisition.
FAQ
What is the maximum common-mode input voltage supported by LT1996CDD#PBF?
The LT1996CDD#PBF supports ±60 V common-mode voltage on P9 and M9 pins when P81 and M81 are grounded and supply is ±15 V. For other pins (P27, M27, P81, M81), the limit is ±15.3 V with ±15 V supply. These ratings are validated per the Absolute Maximum Ratings table and Applications Information section of the official datasheet.
Does LT1996CDD#PBF require external resistors to configure gain?
No, the LT1996CDD#PBF does not require external resistors. Its internal precision SiChrome resistor network (450k/9, 450k/27, 450k/81, and 450k) enables gain configuration from –117 to 118 via pin strapping of P9/P27/P81/REF and M9/M27/M81. This eliminates external component count and matching errors inherent in discrete resistor solutions.
What is the guaranteed operating temperature range for LT1996CDD#PBF?
The LT1996CDD#PBF is guaranteed to operate from –40°C to 85°C (Industrial grade). This is explicitly specified in Note 4 and Note 5 of the Electrical Characteristics table, and confirmed by the "C" suffix in the part number per Linear Technology's ordering guide.
How does LT1996CDD#PBF achieve rail-to-rail output while maintaining precision?
The LT1996CDD#PBF achieves rail-to-rail output through an internal output stage designed to swing within 40 mV of VCC or VEE at no load, while preserving precision via matched thin-film resistors (0.03% max gain error at G=9) and a low-drift op amp (50 µV max VOS). Output accuracy is maintained across temperature due to <3 ppm/°C resistor TC and correlated gain error testing.
Can LT1996CDD#PBF be used in single-supply 3.3 V systems?
Yes, the LT1996CDD#PBF operates down to 2.7 V total supply voltage, making it compatible with 3.3 V single-supply systems. At 3.3 V, the input common-mode range is 0.98 V to 1.86 V (with VREF = 1.25 V), and output swings to within 150 mV of rails under 1 mA load - verified in the Electrical Characteristics table (VOUT parameter, VS = 3 V, 0 V condition).
LT1996CDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.12V/µs
- Gain Bandwidth Product:
- 560 kHz
- -3db Bandwidth:
- 38 kHz
- Current - Input Bias:
- 2.5 nA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 21 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT1996CDD#PBF FAQ
1.How can I place an order for LT1996CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1996CDD#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1996CDD#PBF reliable?
The price and inventory of LT1996CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1996CDD#PBF is usually 5 days.
3.What payment methods are accepted for LT1996CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1996CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1996CDD#PBF?
LT1996CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1996CDD#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1996CDD#PBF?
For technical support, including LT1996CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1996CDD#PBF requirements.
6.How does Aetrix verify that LT1996CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT1996CDD#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1996CDD#PBF meets industry standards.
7.What is the process for return or replacement of LT1996CDD#PBF?
All LT1996CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1996CDD#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1996CDD#PBF part is unused and in its original packaging.
Return procedure for LT1996CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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